BBR-D-13-01139R2-1.pdf (1.68 MB)
Effects of brief time delays on matching-to-sample abilities in capuchin monkeys (Sapajus spp.)
journal contribution
posted on 2015-01-14, 12:57 authored by Valentina Truppa, Diego Antonio De Simone, Eva Piano Mortari, Carlo De LilloTraditionally, studies of delayed matching-to-sample (DMTS) tasks in nonhuman species have focused on the assessment of the limits of the retrieval of information stored in short- and long-term memory systems. However, it is still unclear if visual recognition in these tasks is affected by very brief delay intervals, which are typically used to study rapidly decaying types of visual memory. This study aimed at evaluating if tufted capuchin monkeys' ability to recognise visual stimuli in a DMTS task is affected by (i) the disappearance of the sample stimulus and (ii) the introduction of delay intervals (0.5, 1.0, 2.0 and 3.0s) between the disappearance of the sample and the presentation of the comparison stimuli. The results demonstrated that the simple disappearance of the sample and the introduction of a delay of 0.5s did not affect capuchins' performance either in terms of accuracy or response time. A delay interval of 1.0s produced a significant increase in response time but still did not affect recognition accuracy. By contrast, delays of 2.0 and 3.0s determined a significant increase in response time and a reduction in recognition accuracy. These findings indicate the existence in capuchin monkeys of processes enabling a very accurate retention of stimulus features within time frames comparable to those reported for humans' sensory memory (0.5-1.0s). The extent to which such processes can be considered analogous to the sensory memory processes observed in human visual cognition is discussed.
History
Citation
Behavioural Brain Research, 2014, 271, pp. 240-248Author affiliation
/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY/Themes/Neuroscience & BehaviourVersion
- AM (Accepted Manuscript)
Published in
Behavioural Brain ResearchPublisher
Elsevierissn
0166-4328eissn
1872-7549Copyright date
2014Available date
2015-11-23Publisher DOI
Publisher version
http://www.sciencedirect.com/science/article/pii/S0166432814003246Language
enAdministrator link
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